semi-permanent Share definition Flag Being in a state of semi arousal permantly, with conditions lasting over several hours, even days. See also Duggish Kev: "I'm feeling duggish" Brett: "Tell me about it, I've been semi-permanent all weekend!" semi-permanent by Phonics173 May 9, 2008 0 0 Get merch Get the semi-permanent mug. Buy Now — $32.95 See more merch